‘My senior year of college opened with the customary research projects, grad school applications, and the like. But that all changed two months ago. Some of you may have heard rumors of some bizarre accident that I was involved in. Here is the truth, unabridged, for those who actually want to know.
In the second week of school, the society of physics students held a roughly annual welcome back party. As tradition dictates, we made our own ice cream with liquid nitrogen, 77� Kelvin, as a refrigerant and aerator. We spilled a little liquid nitrogen onto a table and watched the tiny little drops dance around. Someone asked, “Why does it do that?” That may have been the point of no return.’